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Curriculum Vitae

PERSONAL: Name : Tapasi Ghosh Contact Address : Arecib o Observatory, NAIC, HC3 Box 53995, Arecib o, Puerto Rico, PR 00612. USA, Tel: (787)-878-2612, Fax: (787)-878-1861, E-mail: tghosh@naic.edu Date and Place of Birth : 13 Novemb er 1959, Calcutta, India. Nationality : Indian Fluency in Languages other than English: My mother tongue is Bengali (one of the 23 official languages in India), although I have b een using English for more than 35 years and most of my formal education was in English. In addition, I have a limited command of Spanish, as well as a brief exp osure to Dutch.

EDUCATION: B.Sc. Physics (Hons) M.Sc. Physics Post M.Sc Associate (Bio-Physics) Ph.D (Astronomy) Lady Brab ourne College, Calcutta, India. University College of Science, Calcutta, India. Saha Inst. of Nuclear Phys., Calcutta, India. Indian Inst. of Science, Bangalore, India. Thesis Topic: "Low-Frequency Variability of Compact Extragalactic Radio Sources" 1979 1981 1982-83 1990

EMPLOYMENT: · 1990 ­ 1992: Post-doctoral Fellow, Netherlands Foundation for Research in Astronomy, Dwingeloo, The Netherlands. · 1992 ­ 2004: Research Associate, Arecib o Observatory. · 2005 ­ Present: Senior Research Associate, Arecib o Observatory.

CURRENT RESEARCH : I. Evolution of Fundamental Constants : Collab orators: Nissim Kanekar, Jayaram Chengalur (GMRT, India) We have b een accumulating deep-integration sp ectra of the L-band OH satellite lines of the associated-absorb er in PKS 1413+135 at a redshift of z = 0.247. The conjugate nature of these lines implies that the resulting high-precision redshift measurements can b e used to prob e changes in 1


some of the fundamental physical constants. In late 2008, it was found that the Arecib o data taken in 2006 had an erroneous velocity scale due to incorrect on-line Doppler tracking for the particular combination of sp ectrometer and observing procedure used at that time. By early 2009, this had b een corrected, and a further 40 hours of observations taken in May-June 2009 showed excellent agreement b etween the measured velocity values of the two satellite lines and WSRT measurements of the same quantities. The analysis of these 2009 Arecib o data imply, [G/G] = 1.03 ± 0.51 â 10-5 , 1.85 where G gp 2 /µ , a combination of the fine structure constant , the electron-proton mass ratio µ me /mp and the proton gyromagnetic ratio gp . This is an improvement on the value of [G/G] = 1.9 ± 1.1 â 10-5 derived from the earlier WSRT data. A weighted average of the WSRT and AO results gives [G/G] = 1.18 ± 0.46 â 10-5 , yielding 2.6 evidence for a change in , µ or gp from the ep och at which we see PKS 1413+135, i.e. over a look-back time of 2.9 Gyr. A pap er has b een submitted to ApJ for the publication of this result. Efforts are now underway to obtain further integration at Arecib o and improve the statistical significance of this result. I I. High Resolution Mapping of Methanimine in Arp220 : Collab orators: Chris Salter, Rob ert Minchin, Danna Qassim (NAU, REU-2009) During the summer of 2009, we mentored an REU student, Danna Qassim of Northern Arizona University, and worked on a pro ject of milliarcsecond MERLIN mapping of Methanimine in Arp220. The data cub e produced surprising evidence for a compact region of methanimine emission in the eastern nucleus of this double-nuclear starburst galaxy, in which the western comp onent has b een considered to harb or an AGN. This work was presented at the AAS meeting in January 2010. I I I. Cm-wavlength Molecular Lines in Galactic and Extragalactic Environments : I am also involved in a numb er of observing pro jects searching for cm-wavelength molecular lines in Arp220-like ULIRGs, and galactic star forming regions. Recently, these searches have b een extended to the 700 800 MHz band, utilizing the newly installed UHF receiver at Arecib o.

TEACHING-RELATED EXPERIENCE: During the entire year of 2009, I co-sup ervised graduate student, Ashley Zauderer, orgianlly from Univ. of Maryland, transferred to Cornell University for a year under the NSF Grant, AST 0808075 (P.I. T. Ghosh), in her pro ject titled, "HI, OH and L-band Molecular Line Studies of 2-Jy IRASNVSS ULIRGs." At all five NAIC/NRAO Single Dish Summer Schools held alternately at Green Bank and Arecib o every two years, I have given lectures, sup ervised hands-on pro jects and presented data analysis demonstrations. e Along with Chris Salter, I sup ervised the doctoral thesis of Jos´ Francisco Salgado from the University of Michigan (April 2000). I have sup ervised the following undergraduate summer students b etween 1993 and 2009 (in NSF's REU Program). The name, affiliation and pro ject title of each student are listed b elow: · 2009: Danna Qassim, (Northern Arizona University), "MERLIN imaging of Methanimine Molecule (CH2 NH) in Arp 220" Co-investigators: Rob ert Minchin, Chris Salter. · 2006: Maria Ximena Fernandez, (Vassar College and Dartmouth College) "HI and OH study of a subsample of 2-Jy IRAS-NVSS ULIRGs" Co-investigators: Emmanuel Momjian, Chris Salter. 2


· 2005: Laura Kushner (Washington State Univ, WA), "A blind HI survey for Damp ed Lyman Alpha absorb ers." Co-investigators: Karen O'Neil, Chris Salter · 2003: Kit Reilly (deceased, New College, Fl.), "Continuum Mapping of NPS", Co investigator: Chris Salter. · 2002: Samantha Stevenson (Weslyan College), "Evolutionary Tracks of 12-micron sample Seyfert Galaxies", Co -investigators: Leslie Hunt (Achetry Italy), JoAnn Eder. · 2001: SunMi Chung (Weslyan College), " PKS1004+13: The Rosetta Stone for BAL Quasars ?", Co-investigators: Chris Salter, Daniel Altschuler. · 1999: Dargan Frierson (North Carolina State University) "HI sp ectra of Seyfert Galaxies and testing the Unification Scheme". Co-investigators: Joann Eder, Chris Salter. · 1998: Monique Aller (Wellesley) "A Search for High Redshift Hydrogen Absorption in RadioLoud Quasars". Co-investigators: Mike Davis, Chris Salter. · 1998: Dale Kocevski (Univ. of Michigan) "The RFI Environment as seen by the Gregorian L-band Receiver." Co-investigator: JoAnn Eder. · 1997: Francisco Acevedo (Embry-Riddle College, Florida), "Measurement of the Electromagnetic and Radio Frequency Interference (EMI and RFI) at Key Locations within the Observatory". · 1996: Cesar Tavarez (Univ. of Mayaguez, Puerto Rico), "Analysis of Radio Frequency Interference Monitoring Data collected round the Clock at Arecib o Observatory". · 1995: Evan Jones (SMSU, USA), "On the Environmental Triggering of Radio Emission in Seyfert Galaxies". · 1994: Deepa Iyengar (Carleton College, USA), "VLBI imaging of the scatter-broadening of compact extragalactic radio sources seen through the plane of the Galaxy". · 1993: Ben Opp enheimer (Columbia Univ, NY), "Refractive interstellar scintillations of the pulsar, PSR 1933+16". Co-investigator: Chris Salter. I have lectured on "Radio Galaxies and Quasars", "Energy Generation Mechanism in Astronomical sources", "AGNs", "Radio Interferometry" , and "Molecules in Space" to the AO summer students b etween 1993 and 2009.

SOFTWARE and DATA REDUCTION EXPERIENCE : Since 1983, I have b een using Fortran as my basic programming language. I have also b een using the IDL package for the last eight years, often developing codes within that environment. I have some familiarity with C and Unix Scripts. I have worked with PDP, Alliant, Vax/VMS, Unix, Linux, Solaris and Mac OSX op erating systems. I am also familiar with a variety of word processing and desk-top publishing software (b oth Windows and Apple-Macintosh based). I am conversant with html-based web-page developments. For Astronomical data reductions, I have used various standard Single dish and Synthesis Telescop es' data reduction packages. In addition, in the recent past, I have b een using IDL extensively.

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OBSERVER SUPPORT : VLBI related work: The ma jor part of my observer supp ort work over the years have b een in the area of Arecib o's participation in Very Long Baseline Interferometry. Aided by Chris Salter, Emmanuel Momjian (while he was a working for NAIC/AO) constantly, and Arun Venkatraman, and the Electronics Department whenever needed, I have worked with the S2, VLBA4 and Mark5C and eVLBI systems making them available for the users. Since most VLBI data are taken in absentee mode, Chris Salter, (Emmanuel Momjian) and I have also b een involved in every asp ect of all VLBI observations, pre- and p ost-observation calibration and communicating with the correlator and the P.Is. At each stage, we have also b een the staff scientists evaluating the needs of the users and planning successive upgrades. We are exp ecting two ma jor developments in this area within 2010. The first is the acquisition of the digital backend (RDBE) from NRAO, and implementing its use with a Mrak5C recorder to enhance the Arecib o VLBI capabilities by a factor of four. The second is the acquisition of an auxiliary antenna (12-meter diameter) to b e used together with the 305-m dish to provide much improved phase-referencing VLBI observations. Visiting (non-VLBI) Observer Supp ort: I have help ed many general sp ectroscopic observers as their "Friend of the Telescop e". This has often involved assisting/coaching visiting observers as to how to use the telescop e in the b est p ossible way for the particular pro ject, and later to guide them through their data reduction and calibration. If and when needed, I have also develop ed IDL-based codes for their sp ecific needs.

EXPECTATIONS FOR FUTURE WORK : For the VLBI users of the Arecib o Observatory, I exp ect to facilitate up to 4-Gbps data recording. This will involve commissioning the newly procured RDBE and Mark5C systems. I also exp ect to work towards integrating the 12-m dish with regular VLBI observations. This will help me participate in commissioning the "small dish", and developing the techniques for phase-referencing VLBI employing the 12-m antenna for observations using the 305-m dish in US and Global VLBI arrays. Scientifically, I exp ect to continue working with the molecular line survey of Galactic star forming regions which is exp ected to b egin soon. One new area in which I would focus b eginning this summer is a "Search for Variable Radio Sources in GALFACTS". GALFACTS is a full-Stokes continuum "all sky" (covering the declination range of ­0.8 to +37.8 deg) mapping program at 1.4 GHz currently on-going at the Arecib o Observatory. It is a collab orative program involving many scientists from various countries, with diverse in-depth scientific ob jectives led by different groups. (See http://www.ucalgary.ca/ras/GALFACTS for more details). When complete, GALFACTS will have covered a sky area of ab out 4.0 sr. and is exp ected to detect ab out 230,000 discrete extragalactic sources with flux densities greater than 10 mJy/b eam. With the planned observing strategy of GALFACTS, each p oint in the sky is visited twice, with the interval b etween visits spanning 1 to 28 days. Thus, given the large numb er involved, extremely interesting statistics on short-term variability prop erties of discreet radio sources can b e obtained. In addition, comparison with the accurate flux densities of NVSS (NRAO VLA Sky Survey) will provide variability information on a time scale of 10 yr. The sky has never b efore b een searched systematically for variations to this depth, and over such a large area. Beginning in the next few months, I exp ect to work towards algorithm development first, then translate that in to a working program and eventually run the data through. So far ab out 1/4th of the survey has taken place, 4


and a variability study of even that subset would provide statistically significant results.

PUBLICATIONS: 1. Shyla ja, B.S., Babu, G.S.D., Ghosh, T., Indulekha, K., Joarder, P., Karb elkar, S., Shanbag, S., "Effective Temp eratures of Five Southern Am Stars", 1985, Bull. Astron. Soc. India, 13, 87 2. Gopal-Krishna, Ghosh, T. and Saripalli, L. "CERCO - A Comp endium of Extragalactic Radio sources, Catalogues and Observations", 1985, circulated from Tata Institute of Fundamental Research, India. 3. Gopal-Krishna, Stepp e, H., Ghosh, T. and Saripalli, L., "A statistical analysis of the radio prop erties of a large sample of 374 optically selected quasars", 1986, IAU Symp. 119, p. 111. 4. Ghosh, T., Rao, A.P., "The Galactic Coordinate Dep endence of Metre Wavelength Variability", 1987, Bull. Astron. Soc. India, 15 40 5. Ghosh, T. and Rao, A. P., "Observations of low frequency variables at Ooty",1987, NRAO Workshop No. 20: Large-scale Surveys of the Sky, p.43. 6. Ghosh, T. and Gopal-Krishna, " A multifrequency study of radio intensity variations for active galactic nuclei of different optical classes". 1990, A&A 230, 297. 7. Saikia, D. J., Salter, C. J., Banhatti, D.G., Ghosh, T., Gothoskar, P. and Manoharan, P.K., "The Ooty Summer Training Programme 1990", 1991, Bull. Astr. Soc. India., 19, 109. 8. Ghosh, T. and Rao, A. P., "The Galactic latitude dep endence of Low Frequency Variability of extragalactic radio sources". 1992, A&A 264, 203. 9. Kukula, M. J., Ghosh, T., Pedlar, A., Schilizzi, R. T., Miley, G. K., deBruyn, A. G., Saikia, D.J., " High resolution radio observations of Markarian 3", 1993, MNRAS 264, 893. 10. Opp enheimer, B.R., Salter, C.J., Biggs, J., Foster, R., Ghosh, T., "Monitoring the interstellar scintillations of PSR 1933+16 : Eight ep ochs from Jan 1992 to May 1993", 1993, BAAS, 25, 1358. 11. Ghosh, T., Schilizzi, R. T., Miley, G. K., deBruyn, A. G., Kukula, M. J., Pedlar, A., Graham, D., Saikia, D. J., "The milliarcsecond structure of four Seyfert galaxies at 18 cm.", 1993, Proc. IAU Symp. 159 on Active Galactic Nuclei across the electromagnetic sp ectrum, Ed: Blecha, A., and Courvoisier, T. (Kluwer Academic Publishers, 1994), p426. 12. Ghosh, T., Gopal-Krishna, and Rao, A. P., "Three year monitoring of a sample of flat-sp ectrum radio sources at 327 MHz", 1994, A&A S, 106, 29 13. Iyengar D.R., Ghosh, T., Salter, C.J., "Modeling the distribution of interstellar scattering at low latitudes", 1994, BAAS, 26, 1328. 14. Altschuler, D.A., Salgado, J.F., Dennison, B.K., Ghosh, T., "Variability of extragalactic radio sources at low frequencies", 1994, BAAS, 26, 1503. 15. Jones, E.J., Ghosh, T., "Radio-loud Seyfert Galaxies and their Environments", 1995, BAAS, 27, 1355. 16. Acevedo, F., Ghosh, T., "Radio Frequency Interference: Radio Astronomy's Biggest Enemy", 1997, BAAS, 191, 1101. 17. Salgado, J.F., Ghosh, T., Salter, C.J., Junor, W., Manoharan, P.K., 1997, I.A.U. Coll. No. 164, "Radio Emission from Galactic and Extragalactic Compact Sources", Astronomical Society of 5


the Pacific Conference Series, Volume 144, eds. J.A. Zensus, G.B. Taylor, & J.M. Wrob el, P287. 18. Eder, J., Ghosh, T., Kocevski, D.D., "Dealing with the RFI Environment at Arecib o Observatory", 1998, BAAS, 193, 1118. 19. Salgado, J.F., Salter, C.J., Ghosh, T., Manoharan, P.K., "Towards an Understanding of the Galactic Distribution of Electron-Density Fluctuations" 1998, BAAS, 30, 1341. 20. Salter, C.J., Ghosh, T., Alejandro, A., Aller, M.C., Cordero, Y., Daubar, I., DeDeo, S., Kaplan, D.L., Kocevski, D.D., Mercado, F. A., Opp enheimer, B.D., Salmeron, C., "Single-Ep och Measurements of Broadband Radio Continuum Sp ectra", 1998, BAAS, 30, 1414. 21. Salgado, J.F., Salter, C.J., Ghosh, T., Junor, W., Manoharan, P.K., "A Study of the Distribution of Galactic Scattering Material in the Longitude Range 30 l 75 " 1999, BAAS, 31, 1373. 22. Frierson, D.M., Ghosh, T., Salter, C., Eder, J., "Neutral Hydrogen in Seyfert Galaxies - Testing Implications of Unified Scheme", 1999, BAAS, 195, No.115.14. 23. Kukula, M., Ghosh, T., Pedlar, A., Schilizzi, R.T., "Parsec-Scale Structures in the Nuclei of Four Seyfert Galaxies", 1999, ApJ, 518, 117. 24. Salgado, J.F., Ghosh, T., Altschuler, D.R., Dennison, B.K., Mitchell, K.J., Payne, H.E., "14year Program Monitoring the Flux Densities of 33 radio sources at low frequencies", 1999, ApJ Suppl. 120, 77. 25. Ghosh T., Eder J.A., Salter C.J., Frierson, D.M., 2000, "Neutral Hydrogen in Seyfert Galaxies - A Test for the Unification Scheme", ASP Conference Series; "Gas and Galaxy Evolution", eds. J.E. Hibbard, M. Rup en, J.H. van Gorkom. 26. Hirabayashi et al., " The VSOP 5 GHz AGN Survey I. Compilation and Observations", 2000, PASJ, 52, 997. 27. Molotov, I.E., Chuprikov, A.A., Salter, C.J., Ghosh, T., "The p ossibility for collab oration of Arecib o with international S2 ad-hoc array", 2001, BAAS, 33, 899. 28. Salter, C.J., Ghosh, T., "Arecib o Sp ectral Baselines in the Presence of Continuum Emission", 2001, BAAS, 33, 900. 29. Kanekar, N., Ghosh, T., Chengalur, J.N., "Detection of a multi-phase ISM at z= 0.2212", 2001, A&A, 373, 394. 30. Heiles, C., Perillat, P., Nolan, M., Lorimer, D., Bhat, N.D.R., Howell, E., Ghosh, T., Lewis, M., O'Neil, K., Salter, C., and Stanimirovic, S., "All Stokes Parameterization of the Main Beam and First Sidelob e for the Arecib o Radio Telescop e", 2001, PASP, 113, 1247. 31. Heiles, C., Perillat, P., Nolan, M., Lorimer, D., Bhat, N.D.R., Howell, E., Ghosh, T., Lewis, M., O'Neil, K., Salter, C., and Stanimirovic, S., "Mueller Matrix Parameters for Radio Telescop es and Their Observational Determination", 2001, PASP, 113, 1274. 32. Ghosh, T., Aller, M., Salter, C.J., and Davis, M.M., "A Neutral Hydrogen Search for the Host Galaxies of 18 Radio Loud Quasars", 2002, I.A.U. Symp. No. 199, 127. 33. Ghosh, T., "Sp ectrum Management", ASP Conference Series; "NAIC/NRAO School on SingleDish Radio Astronomy: Techniques and Applications" , eds. S. Stanimirovic, D.A. Altschuler, P.F. Goldsmith, C.J. Salter, 2002, 278, 447. 34. Ghosh, T., Salter, C.J., 2002, "Arecib o Sp ectral Baselines in the Presence of Continuum Emis6


sion", ASP Conference Series; "NAIC/NRAO School on Single-Dish Radio Astronomy: Techniques and Applications", eds. S. Stanimirovic, D.A. Altschuler, P.F. Goldsmith, C.J. Salter, 2002, 278, 521 35. Molotov, I., Chuprikov, A., Likhachev, S., Salter, C.J., Ghosh, T., Ghigo, F., Dougherty, S., 2002, "First VLBI Observations with Arecib o in an International S2 Ad-hoc Array", ASP Conference Series; "NAIC/NRAO School on Single-Dish Radio Astronomy: Techniques and Applications", eds. S. Stanimirovic, D.A. Altschuler, P.F. Goldsmith, C.J. Salter, 2002, 278, 507. 36. Stevenson, S.L., Hunt, L.K., Ghosh, T., Eder, J., "HI Evolutionary Studies of IR-Selected AGNs", 2002, BAAS, 34, 1192 37. Salter, C.J., Jeyakumar, S., Saikia, D.J., Ghosh, T., Stutzki, J., "HI Absorption towards Compact Steep Sp ectrum Radio Sources", 2003, BAAS, 35, 760 38. Reilly (deceased), K., Salter, C.J., Ghosh, T., "Continuum mapping of an interaction Region within Loop-I (the North Polar Spur) in the ISM", 2003, BAAS, 35, 1380 39. Ghosh, T., Kavars, D.W., Robinson, R.E., Saintonge, A., Strasser, S.T., Salter, C.J., "High Sensitive Observations of the Satellite OH Lines of Arp 220", 2003, BAAS, 35, 1393 40. Kanekar, Nissim, Chengalur, Jayaram N., Ghosh Tapasi, "Conjugate 18-cm OH satellite Lines at a Cosmological Distance", 2004, PhRvL, 93, 1302 41. Zahid, J., DeCesar, M., Kinnaman, L., Rice, M., Saucedo-McQuade, K., Ghosh, T., Momjian, E., Salter, C.J., "Neutral Hydrogen in the Galaxy Cluster, Ab ell 2390", 2004, BAAS, 36, 1595 42. Momjian, E.,Ghosh, T., Salter, C.J., Venkataraman, A., "eVLBI observations with the 305m Arecib o Radio Telescop e", 2004, BAAS, 36, 1604 43. Porcas, R. W.; Alef, W. Ghosh, T.; Salter, C. J. Garrington, S. T. 2004, "Compact Structure in FIRST Survey Sources", EVN Conference, 7, 31 44. Paragi,Z., Garrett, M.A., Bohdan, P., Kouveliotou, C., Szomoru, A., Reynolds, C., Perseley, S.M., Ghosh, T., "e-VLBI observations of SN2001em - an off-axis GRB candidate", 2005, MmSAI, 76, 570 45. Taylor, G.B., Momjian, E., Pihlstroem, Y., Ghosh, T., Salter, C.J., "Late Time Observations of the Afterglow and Environment of GRB 030329", 2005, ApJ, 662, 986 46. Gupta, N., Ghosh, T., Jeyakumar, S., Saikia, D. J., Salter, C. J., Srianand, R. 2005, Bulletin of the Astronomical Society of India, 33, 397 47. Gupta, N., Salter, C.J., Saikia, D.J., Ghosh, T., Jeyakumar, S., "Probing Radio Source Environments via HI and OH Absorption", 2006, MNRAS, 373, 972 48. Momjian, E., Salter, C.J., Ghosh, T., Chengalur, J., Kanekar, N., Keeney, B.A., Stocke, J.T. "Arecib o HI Observations of the Sub-DLA at z=0.0063 towards PG1216+069", 2006, BAAS, 38, 96 49. Hernandez, H., Ghosh, T., Salter, C.J., Momjian, E., "An Arecib o HI 21-com Absorption Survey of X-ray Rich Clusters", 2006, BAAS, 38, 1150 50. Fernandez, X.M., Momjian, E., Ghosh, T., Salter, C.J., "A Radio Sp ectral Line Study of the 2-Jy IRAS-NVSS Sample" , 2006, BAAS, 38, 1199 51. Gupta, N., Salter, C. J., Saikia, D. J., Ghosh, T., & Jeyakumar, S., "Probing Radio Source Environments Using 21-cm Absorption", 2007, in "The Central Engine of Active Galactic Nuclei", 7


ASP Conf. Ser., 373, 203 52. Momjian, E., Salter, C.J., Ghosh, T., Lerner, M.S., Minchin, R., Catinella, B., Lebron, M., "Arecib o discovery of the pre-biotic molecule methanimine in Arp220 and new cm-wavelength transitions of other molecules", In "From Planets to Dark Energy: the Modern Radio Universe", 2007, The University of Manchester, UK. Published online at SISSA, Proceedings of Science, 118 53. Salter, C. J., Catinella, B., Ghosh, T., Lebron, M., Lerner, M. S., Minchin, R., & Momjian, E., "Excited-OH And Methanol Absorption In The ULIRG Arp220", 2007, BAAS, 39, 992 54. Ghosh, T., Catinella, B., Lebron, M., Lerner, M. S., Minchin, R., Momjian, E., & Salter, C. J., "The Detection of Prebiotic Molecules in the ULIRG Arp 220", 2007, BAAS, 39, 992 55. Kanekar, N., Chengalur, J. N., & Ghosh, T., "Probing Fundamental Constant Evolution with Redshifted OH Lines", 2008, Princeton Series in Astrophysics, 109 56. Salter, C.J., Ghosh, T., Catinella, B., Lebron, M., Lerner, M.S., Minchin, R., Momjian, E., "The Arecib o Arp 220 Sp ectral Census I: Discovery of the Pre-Biotic Molecule Methanimine and New Cm-wavelength Transitions of Other Molecules", 2008, AJ, 136, 389 57. Hern´ndez, H., Ghosh, T., Salter, C. J., & Momjian, E. 2008, The Evolution of Galaxies a Through the Neutral Hydrogen Window, AIP Conference Proceedings, 1035, 214 58. Minchin, R.F., Catinella, B., Ghosh, T., Lebron, M., Lerner, M., Momjian, E., O'Neil, K., Salter, C., 2009, "A Cm-Wavelength Search for Pre-Biotic Molecules in Starburst Galaxies", BAAS, 41, 328 59. Edwards, P.G., Hirabayashi, H., Ulvestad, J. S., Salter, C., Ghosh, T., Gurvits, L. I., & Fomalont, E. B. 2009, "The Deep Interferometric VSOP­Arecib o Survey (DIVAS)", Astronomical Society of the Pacific Conference Series, 402, 148 60. Qasim, D., Ghosh, T., Minchin, R., Salter, C., & Thomasson, P. 2010, "MERLIN Imaging of Methanimine Molecule in Arp220", Bulletin of the American Astronomical Society, 41, 248 61. Salter, C. J., Chandola, Y., Ghosh, T., Minchin, R., & Saikia, D. J. 2010, "Detection Of HI Absorption In The Host Galaxy Of Quasar, CTA 21", Bulletin of the American Astronomical Society, 41, 371 62. Kanekar, Nissim, Chengalur, Jayaram N., Ghosh Tapasi, " Probing fundamental constant evolution with redshifted conjugate-satellite OH lines", 2010, ApJ Letters, submitted. 63. Salter, C.J., Saikia, D.J., Minchin, R., Ghosh, T., Chandola, Y., "The Discovery of Host Galaxy HI Absorption in CTA 21", 2010, ApJ Letters, Submitted. 64. Fernandez, M.X., Momjian, E., Salter, C.J., Ghosh, T., "A Radio Sp ectral Line Study of the 2-Jy IRAS-NVSS Sample: Part I", 2010, AJ, Submitted.

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